10 results about "Coal gasifier" patented technology

The utility model discloses coal gasification furnace slag granulating equipment, coal gasification furnace slag granulating equipment includes the material conveying mechanism, material modification mechanism, material binding mechanism, material granulating mechanism and material drying mechanism that connect gradually, and material modification mechanism includes acid -base adjusting subassembly and modification subassembly. The utility model discloses the application of coal gasification furnace slag granulating equipment system, and the preparation time of granular adsorbing material is shortened significantly, saves manpower and space cost, and improves the granulating efficiency.

The utility model relates to coal gas generating equipment technical field discloses a coal storage device of pulverized coal gasification furnace, including coal storage hopper, the rear surface lower extreme of coal storage hopper is provided with opening and closing mechanism, and the front surface and inside of coal storage hopper are provided with anti -blocking mechanism jointly, the utility model discloses a anti -blocking mechanism is provided with, and anti -blocking mechanism effectively solved the jam problem that the coal powder leads to electrostatic force adsorption, water content agglomeration, particle bridging or inner wall adhesion, the stirring vane can dynamically break up the coal body of group coal and scatter the mechanical interlock between particles, and the scraper assembly continuously scrapes the wall adhesive layer of bin through the elastic compensation mechanism, and the flow line type material guiding design of three -segment type coal storage structure is combined, and the coal powder flow resistance is reduced significantly, the device activates the function of breaking down in the process of opening and closing linkage simultaneously, avoids the intermittent operation defect of traditional pneumatic arch breaking, can prevent the metamorphic, gas channeling and local cavity risk caused by coal powder retention, improves the continuity and reliability of the coal feeding system as a whole.

The application discloses a device and method for treating salt-containing wastewater by down-flow and concurrent-flow coal gasification heat recovery coordination, which comprises a coal gasification furnace, a synthetic gas cooler, a cyclone separator, a material return, a particulate controller, a raw material burner, a salt-containing wastewater feeding device, a lined pipeline and the like. Oxygen is injected into the generated crude synthetic gas through an oxygen nozzle at the connection between the coal gasification furnace and the lined pipeline, so that the carbon-containing material in the crude synthetic gas is combusted with the oxygen, the crude synthetic gas is secondarily heated, and the molten fly ash is not directly contacted with the quenching water. Solid particles are used as heat transfer media, and the specific surface area of the solid particles is extremely large, so that the overall heat transfer coefficient is more than 5 times of that of a traditional radiant waste heat boiler. The recovery of the sensible heat of the crude synthetic gas can be used to treat the salt-containing wastewater and produce glass bodies. The cooling and purification process of the crude synthetic gas is completely realized by a dry process, and no water-containing fine slag is generated.

The utility model discloses a kind of coal gasification furnace heat recycling devices, belong to coal gasification furnace field, including furnace body, the upper surface of the furnace body is equipped with filter frame, the inside of the filter frame is equipped with filter plate, the outer surface of the filter frame is equipped with cleaning assembly, the outer surface of the furnace body is equipped with recovery assembly, the upper surface of the recovery assembly is equipped with pump, the input end of the pump is communicated with the outer surface of filter frame by suction pipe, the cleaning assembly includes top frame and air pump. By being equipped with filter frame and filter plate in front of recovery assembly, the gas needed to be pumped into water storage tank can be filtered, coal dust in the gas is filtered out, so that coal dust is prevented from flowing out with gas and adhering to the inner wall of pipeline, so the device effectively solves the problem that existing device is prone to cause coal dust to adhere to the inner wall of connecting pipe during use, causing the efficiency of heat exchange to be affected.

The present application relates to coal gasification equipment technical field, specifically, relate to coal gasification furnace quenching ring tangential water inlet and outlet strengthened cooling device. The coal gasification furnace quenching ring tangential water inlet and outlet strengthened cooling device, it includes: the descending cylinder;Annular plate, the annular plate fixedly installed at the top outside of descending cylinder;Water chamber inner cylinder, the water chamber inner cylinder fixedly installed at the top inside of descending cylinder. In the application, two-stage tangential water inlet is arranged to make cooling water high-speed rotation, eliminate flow dead zone, and water curtain is continuously uninterrupted and uniform in thickness through spiral line-shaped water injection seam, complete water film is formed on the inner wall of descending cylinder, cooling uniformity and heat protection effect are improved, fine ash particles are thrown to the outer wall and deposited by using high-speed rotation centrifugal force and cooperating with triangular flow guide wedge, so that the continuous operation cycle is prolonged, periodic discharge is realized by cooperating with the blowdown pipe, in addition, the adhesion is enhanced by tangential water curtain injection, the synthesized gas is prevented from being blown away, and the operation reliability and safety of the gasification furnace are significantly improved.

This invention relates to the field of building material preparation technology, and discloses a concrete admixture, its preparation method, and its application. The method includes the following steps: (1) drying, crushing, and screening coal gasification slag to obtain pretreated coal gasification slag; (2) ball milling and screening the pretreated coal gasification slag to obtain coal gasification slag micro powder with a specific surface area of ​​280-320 m² / kg and a particle size of 3-50 μm; (3) mixing the coal gasification slag micro powder, fly ash, and mineral powder at a weight ratio of 100:(10-80):(5-80). This method, by crushing and screening the coal gasification slag, combined with activation technology, and synergistically optimizing the particle size distribution, and then compounding it with other admixtures, obtains a compound coal gasification slag micro powder admixture for preparing high-performance concrete, which achieves precise control of concrete workability while meeting application and environmental requirements.

The present application relates to the technical field of gasification furnace, and particularly discloses a method for realizing rapid heating of a gasification furnace by using waste gas pulse combustion. The method comprises the following steps: in the heating stage of the gasification furnace, waste gas is sprayed into the furnace in a pulse mode, the waste gas contains combustible components, and the combustible components combust and release heat in the furnace; when the temperature and pressure in the furnace reach the gasification operation conditions respectively, the spraying of the waste gas is stopped, and the conventional gasification operation is switched to. Without using any external fuel (natural gas, diesel, liquefied gas, etc.), the present application significantly improves the heating rate of the furnace in the starting stage of the pulverized coal gasification furnace, shortens the length of the entire heating section, and the heating rate of the gasification furnace is increased from the conventional 1-5 ℃ / min to 5-15 ℃ / min, and the length of the heating section is shortened from 10-18 h to ≤5 h.

The present application relates to the technical field of geopolymer preparation, and discloses a mixed powder composition for preparing geopolymer cementing material, a preparation method and application thereof. The method comprises the following steps: (1) mixing, grinding and modifying coal gasification furnace slag, desulfurization gypsum and mirabilite to obtain modified coal gasification furnace slag; (2) mixing the modified coal gasification furnace slag with fly ash; (3) mixing solid water glass with red mud to obtain a composite activator; and (4) mixing the composite activator with the mixture obtained in step (2). The method has the characteristics of small amount of activator, low curing temperature and high production efficiency, and the mixed powder composition for preparing geopolymer cementing material prepared by the method is solid, which is convenient for storage and transportation. When used, the mixed powder composition is directly mixed with water to obtain geopolymer cementing material with excellent early strength, condensation efficiency, strength stability and durability.

This application relates to a method and apparatus for protecting the annular cavity of a gasifier, belonging to the field of gasifiers. The method includes: installing a sealing component between the high-temperature zone and the annular cavity of the gasifier to obtain a high-temperature syngas chamber and a low-temperature protective gas annular cavity; filling the low-temperature protective gas annular cavity with low-temperature protective gas, the temperature of which is lower than that of the high-temperature syngas discharged from the high-temperature syngas chamber; installing a differential pressure regulating valve between the high-temperature syngas chamber and the low-temperature protective gas annular cavity; and controlling the pressure difference between the high-temperature syngas chamber and the low-temperature protective gas annular cavity under different operating conditions through the differential pressure regulating valve. This application can reduce the entry of acidic gases from the syngas into the annular cavity / annular gap through multiple sealing components, preventing or reducing dew point corrosion and solving the material selection problem for high-sulfur and high-chlorine coal gasifiers. Simultaneously, the differential pressure regulating valve achieves pressure balance between the high-temperature syngas chamber and the low-temperature protective gas annular cavity of the gasifier, protecting the safety of the gasifier's internal components.